326 C'oleopterological Notices, VII. 



the suture and abruptly more confused in outer half, though easily 

 traceable throughout the width. Length 13.5 mm.; width 6.8 

 mm. 



California. The specimen described above is a male and the 

 only representative which I have seen. The basal joint of the an- 

 terior tarsi is pubescent beneath only in a small oval area occupy- 

 ing apical third of the length. The female is undoubtedly larger, 

 with broader and less convex strial intervals and generally less 

 deeply sculptured elytra. The pronotum has a dull blue-black 

 lustre. 



In the above type the left gena has a rather large angulate in- 

 cisure, while the right has merel}' an extremely minute cleft. 



22. B. convergeiis n. sp. — Feebly ventricose, ahitaceous, the elytra 

 shining, deep black throughout, the pronotutn without decided bluish lustre. 

 Head rather narrow and elongate, the vertex generally feebly and transversely 

 wrinkled along the middle anteriorly; gense feebly developed, with a small 

 angulate nick; supra-orbital ridges moderate, gradually sloping inwardly 

 above the antenni?e, the latter decidedly short, slender but quite distinctly 

 thicker basally, % as long as the body, the basal joint moderately thick, ob- 

 conic, shorter than the next two but longer than the third, the seta very near 

 the apex. Prothorax relatively quite small, as long as wide, moderately di- 

 lated and rounded anteriorly, the sides only faintly subangulate well before 

 the middle, thence strongly oblique to the basal margin, just before which 

 they are very feebly sinuate, base narrow, less than }4 the maximum 

 width and distinctly narrower than the head; angles more than right and 

 slightly blunt ; disk distinctly longitudinally convex anteriorly, the impres- 

 sions feeble, the fine median line, however, quite distinct ; lateral margins 

 moderately reflexed. Elytra almost evenly elliptical, very convex, % longer 

 than wide, 3 times as long as the prothorax but scarcely 2^3 times as wide, 

 not full but obliquely rounded at the humeri ; margins narrowly reflexed ; 

 disk with very broadly and deeply impressed, but generally rather finely punc- 

 tate striffi, the intervals strongly convex, interrupted at rather long intervals 

 internally, but much broken up, though readily traceable, in lateral third, the 

 general sculpture very coarse. Length 13.5-15.0 mm. ; width 5.9-7.0 mm. 



California (Siskiyou Co.). 



The female differs considerably from the male, described above, 

 in having the elytra strongly swollen and distinctly fuller and less 

 obliquely rounded at the humeri, more than three times as long 

 as the prothorax and 2^- times as wide, the intervals wider and 

 less convex, but more thoroughly broken up in an abruptly de- 

 limited area, occupying hiWy lateral third of the width. In the 

 male the basal joint of the anterior tarsi is densely pubescent in 

 a rounded patch occupying but little more than apical third. 



